Last Updated 3 hours ago
Overview
The Type 3741 Moleparcan is a long, spun-aluminum PAR64 can with a hinged rear cover. Its beam is set by the installed globe and rotates from the rear of the fixture. With a 1 kW lamp at 20 ft, the FFN very narrow spot gives 945 fc at centre across 4.4 × 1.7 ft. The FFR medium flood opens the field to 8.3 × 3.5 ft at 297 fc.
Key specifications
| Specification | Details |
|---|---|
| Maximum rating | 1,000 W, 120/240 V AC or DC, 8.3 A maximum as marked |
| Socket | Mogul end-prong PAR64 |
| Housing | Spun aluminum with strap yoke and hinged rear cover |
| Dimensions | 17¼ in. long × 8½ in. diameter |
| Weight | 4½ lb with cable |
| Lead | 30 in. sleeved lead, plug specified separately |
| Finishes | 3741B black, 3741R maroon, 3741S polished aluminum |
Replacement lamps
These are the six 1,000 W, 120 V PAR64 lamps listed by Mole-Richardson. The manufacturer also lists 500 W, 2,800 K alternatives in narrow, medium and wide spreads.
| Lamp code | Beam | Colour | Rated life |
|---|---|---|---|
| FFN | Very narrow spot | 3,200 K | 800 h |
| FFP | Narrow spot | 3,200 K | 800 h |
| FFR | Medium flood | 3,200 K | 800 h |
| FFS | Wide flood | 3,200 K | 800 h |
| FGM | Narrow spot | Dichroic daylight | 200 h |
| FGN | Medium flood | Dichroic daylight | 200 h |
Look up replacement lamp codes for this fixture.
Strengths and limitations
- The 4½ lb head has a rear opening and snap-in lamp holder. Relamping does not require removing the front colour frame.
- The housing is 17¼ in. long. Allow room behind it to hinge the rear cover open when planning a close-to-wall position.
Practical uses
For a band of light across a backing, choose the lamp for the width of the set and rotate the oval to suit the composition. At 30 ft the FFR medium flood covers 12.5 × 5.3 ft at 132 fc. Switching to FFS wide flood opens that to 18.5 × 10.7 ft at 43 fc.
Output and photometrics
The chart covers bare 1,000 W, 120 V tungsten lamps. It gives centre-beam foot-candles with each lamp oriented for maximum horizontal width. The quoted field dimensions are measured at roughly half the centre intensity.
| Configuration (fc at centre) | 10 ft | 20 ft | 30 ft | 40 ft | 50 ft | 75 ft |
|---|---|---|---|---|---|---|
| FFN very narrow spot | 3,780 | 945 | 420 | 235 | 150 | 65 |
| FFP narrow spot | 3,420 | 855 | 380 | 215 | 137 | 60 |
| FFR medium flood | 1,188 | 297 | 132 | 74 | 48 | 21 |
| FFS wide flood | 387 | 97 | 43 | 24 | 16 | 7 |
Manufacturer’s original output and beam dimensions (PDF).
Photometric & exposure calculator
Estimate centre-beam illumination and the corresponding camera aperture from this fixture’s published measurements.
Estimated output
Select a configuration to calculate.
Manufacturer readings are for the stated optic, colour setting and full output, measured at the beam centre. Values between measured distances are interpolated. Point-source values outside those distances are approximate inverse-square estimates; large sources cannot be reliably extrapolated and are limited to their measured range. Exposure uses frame rate, shutter angle, ISO and the selected incident-meter calibration. Only the optics and diffusion explicitly listed in the measurement are included; additional modifiers, bounce, beam edges, ambient light, ND filters and camera exposure-index differences are not accounted for. Confirm critical exposures on set with a meter. Photometric source
Power and controls
Mole supplied a 30 in. lead and specified the plug separately. Identify the fitted connector and lamp voltage when ordering a used or rental head. The photometric chart covers the four 1,000 W, 120 V tungsten lamps.
Optics and mounting
The Type 37429 colour frame is secured by a spring-loaded top clip. Mole lists the Type 37430 hook clamp, Type 81852 clamp and adapter, and Type 8143 strap-yoke adapter for a ⅝ in. spud. Confirm which mount comes with the head.
Comparable fixture
For a larger area, the Six-Light Molepar (Type 5761) takes six 1 kW PAR64 lamps in pivoting pairs. Use the six-light chart for that configuration.
Field coverage and further reading
Mole-Richardson’s rental catalogue lists the 3741 with a frame and block or C-clamp. Its separate entry for the 2271 includes barndoors and scrims. The two 1 kW PAR listings describe different packages. Mole-Richardson rental catalogue, PAR fixtures.
Rental and used-fixture checks
Check the finish suffix, hinge, lamp retainer and spring-loaded colour-frame clip. Request the exact PAR64 beam code. A can supplied with a medium flood will give a different pool from the very narrow spot even when both are marked 1,000 W.